import re


def shorten(name: str) -> str:
    """Shorten a raw GPU device name (lspci / lact) for display.

    Strips a trailing "(rev ...)" marker, then reformats by bracket
    group: a name like "Renoir [Radeon Vega Series / ...]" becomes
    "Renoir (Radeon Vega Series)"; a name with two or more groups (typical
    for unbound PCI IDs, e.g. "[1002] Device [1586]") becomes
    "first-group middle-text (last-group)"; anything else is truncated to
    50 characters.

    Args:
        name: raw device name from lspci or lact.

    Returns:
        A display-friendly name.
    """
    name = re.sub(r"\s*\(rev.*\)$", "", name).strip()
    groups = re.findall(r"\[([^\]]+)\]", name)
    if len(groups) >= 2:
        brand = groups[0]
        series = groups[-1].split(" / ")[0]
        model = name.split("]", 1)[1].split("[", 1)[0].strip()
        return f"{brand} {model} ({series})".strip()
    if len(groups) == 1:
        series = groups[0].split(" / ")[0]
        model = name.split("[", 1)[0].strip()
        return f"{model} ({series})".strip()
    return name[:50]